Prosecution Insights
Last updated: October 26, 2026

Warren K Fenwick, USPTO Patent Examiner

Listed by the USPTO as FENWICK, WARREN K

Tech Center 2800 • Art Units: 2852 2862

This examiner grants 90% of resolved cases

Analysis

FENWICK, WARREN K has 653 resolved cases in Tech Center 2800 and art unit 2852. The allowance rate is 89.7%, the interview lift is 0.3%, and the median time to allowance is 740 days. This record shows a high allowance rate together with a limited measured interview effect, so written claim presentation and amendment strategy appear more central than interview activity.

The listed companies are Actutek Corporation, Denso Corporation, and Nippon Telegraph and Telephone Corporation. The listed firms are Faegre Drinker NTT, LUCAS & MERCANTI, LLP, and Muncy, Geissler, Olds & Lowe, P.C. Practitioners can use the combination of resolved-case volume and median timing to set expectations for prosecution management, while treating interviews as a limited incremental lever in this dataset.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

89.7%
Allow Rate
+21.7% vs TC avg
666
Total Applications
+0.3%
Interview Lift
740
Avg Prosecution Days
Based on 653 resolved cases, 2023–2026

Rejection Statute Breakdown

3.0%
§101 Eligibility
28.9%
§102 Novelty
38.0%
§103 Obviousness
14.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18819056 OPTICAL COMPONENT DRIVING MECHANISM Non-Final OA Actutek Corporation
18828967 DETECTION APPARATUS Non-Final OA DENSO CORPORATION
18863768 SHAKING FORCE OPTIMIZATION SYSTEM, SHAKING FORCE OPTIMIZATION METHOD, AND ARITHMETIC DEVICE Non-Final OA NTT, Inc.

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Frequently Asked Questions

What is examiner Warren K Fenwick's allowance rate?

89.7% of resolved applications examined by Warren K Fenwick were allowed (653 resolved cases), compared with 78.8% across Art Unit 2852 over the last five years.

Does an interview help with examiner Warren K Fenwick?

This examiner's interview lift is +0.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Warren K Fenwick take to allow a patent?

Applications allowed by Warren K Fenwick took 740 days on average from filing to allowance.

Which art unit does examiner Warren K Fenwick work in?

Warren K Fenwick examines applications in Art Unit 2852 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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